Der König von St. Pauli

Rudi Kranzow has made a name for himself in the red-light district of St. Pauli, and his "Blaue Banane" is one of the most exciting strip clubs in this hot spot. Here, Lajana, temptation incarnate, dances while ex-boxer Sugar, Kranzow's loyal bodyguard, kicks out uninvited guests. Mizzi, an aging prostitute who is an excellent cook, and Karin, alias Karl-Heinz, a transsexual with a big mouth, are part of the furniture. When Kranzow, nicknamed Würfel-Rudi (Dice Rudi) because of his passion for gambling, is unable to pay his gambling debts, fish wholesaler Graf, who controls the scene from behind the scenes, reaches out for the "Blue Banana."

Robert Kranzow dropped out of law school to take over his father Rudi's strip club in St. Pauli after Rudi was left in critical condition following an attempted murder. To pay off Dice Rudi's crushing gambling debts, Robert has set up a catering service with bodyguard Sugar, prostitute Mizzi, and transsexual Karin. But Rudi's promissory note is now in the possession of magician Dirk, who does the dirty work for real estate mogul Dr. Schmidt-Weber and is doing everything he can to bring Robert to his knees.

Rudi is finally discharged from the hospital and takes over the business at his strip club, which is now called "Blue Banana." He falls in love with the new singer Julia—who his son Robert also has his eye on. Tensions between father and son escalate when Robert narrowly escapes an assassination attempt and Rudi wants to send his son back to Munich for his own protection. Rudi suspects the "Count" and pays his powerful adversary a visit to threaten him.